Saoirse Ronan snaps a few pics with her father Paul at the premiere of Byzantium during the 2013 Glasgow Film Festival in Scotland on Friday night (February 22).

The 18-year-old actress, who wore an Antonio Bernardi dress, was joined by co-star Gemma Arterton.

Saoirse and Gemma play two mysterious women who seek refuge in a run-down coastal resort in Byzantium.

Clara (Arterton) meets lonely Noel, who provides shelter in his deserted guesthouse, Byzantium. Schoolgirl Eleanor (Ronan) befriends Frank (Caleb Landry Jones) and tells him their lethal secret — they were born 200 years ago and survive on human blood. As knowledge of their secret spreads, their past catches up on them with deathly consequence.